Basics of Statistical Physics,by Harald J.W. Müller-Kirsten

Reactor Physics. By R. Schulten and W. Güth. Translated by W. K. Mansfield. In two volumes. (Harrap, 1967.) [Vol. I: pp. viii + 144; Vol. II: pp. vi+ 154.] 22s. 6d. each volume.

Principles of Atomic Spectra. By B. W. Shore and D. H. Menzel. (John Wiley, 1968.) [Pp. xiv + 538.] £8. 18s. 0d.

Les Transitions Electroniques dans les Solides Non Conducteurs. (Colloque de la Société Français de Physique.) (Presses Universitaires de la France, 1967.) [Pp. 177.] 35 F.

Mechanics. Point Objects and Particles. By Terry Triffet. (John Wiley, 1968.) [Pp. ix + 546.] 32s.

Traité ?Électricité Théorique, Vol. IV: Electromagnetism, etc. By Marc Jouguet. (Paris: Gauthier-Villars, 1968.) [Pp. 350.] 94 F.

Modern Physics: An Introductory Survey. By Arthur Beiser. (Addison-Wesley, 1968.) [Pp. ix + 221.] 26s.

Perpetual Motion: Electrons and Atoms in Crystals. By Alec T. Stewart. (Heinemann Educational Books, 1968.) [Pp. x + 146.] 25s.

An Introduction to the Theory of Superconductivity. By C. G. Kuper. (Clarendon Press: Oxford University Press, 1968.) [Pp. vii + 301.] 60s. Scope: Textbook. Level: Postgraduate; Undergraduate.

Progress in High Temperature Physics and Chemistry. Edited by C. A. Rouse. (Pergamon Press, 1968.) [Pp. 176.] 75s.

Ondes dans las Plasmas. By Daniel Quémada. (Paris: Hermann, 1968.) [Pp. 384.] 48 Fr.

Plasmas et Milieux Ionisés. By Evry Schatzman.(Presses Universitaires de la France, 1968.) [Pp. 134.] 16 Fr.

Mechanics. By R. C. Smith and P. Smith. (John Wiley &; Sons, 1968.) [Pp. xviii + 263.] 80s. Scope: Textbook. Level: Undergraduate.

Materials of High Vacuum Technology. Vol. 2: Silicates. By Werner Espe. (Pergamon Press, 1968.) [Pp xxiii + 660.] £16.

Glassblowing for Laboratory Technicians. By R. Barbour. (Pergamon Press, 1968.) [Pp XV + 245.] 40s.

Equilibrium Thermodynamics. By J. C. Adkins. (McGraw-Hill, 1968.) [Pp. xii + 283.] 48s. Scope: Textbook. Level: Undergraduate.

Introduction to Thermodynamics of Irreversible Processes. (Third Edition.) By I. Prigogigne. (John Wiley (Interscience), 1968.) [Pp. xv + 147.] 56s. Scope: Library. Level: Specialist/postgraduate.

Introduction to Physical Statistics. By Bruce R. Lindsay. (Dover Books (Constable), 1968.) [Pp. ix + 306.] 26s. 6d. Scope: Textbook. Level: Undergraduate.

Solid State Physics. An Introduction to its Theory. By H. Clark. (Macmillan, 1968.) [Pp. vii + 239.] 40s. Scope: Textbook. Level: Specialist/postgraduate.

Wave Mechanics. By Gunther Ludwig. (Pergamon Press, 1968.) [Pp. v + 230.] 30s. hard cover; 21s. flexi.

Introduction to Special Relativity. By Robert Resnick. (John Wiley, 1968.) [Pp. x + 226.] 70s.     

Cognition coming about: Self-organisation and free-energy: Commentary on Wright,J.J. and Bourke,P.D. (2020) “The growth of cognition: Free energy minimization and the embryogenesis of cortical computation”

Wright and Bourke's compelling article rightly points out that existing models of embryogenesis fail to explain the mechanisms and functional significance of the dynamic connections among neurons. We pursue their account of Dynamic Logic by appealing to the Markov blanket formalism that underwrites the Free Energy Principle. We submit that this allows one to model embryogenesis as self-organisation in a dynamical system that minimises free-energy. The ensuing formalism may be extended to also explain the autonomous emergence of cognition, specifically in the brain, as a dynamic self-assembling process.     

A Journey through Statistical Physics. Selecta of Jürg Fröhlich,edited by G. Felder,G.M. Graf and K. Hepp

Current activity in the field of magnetic separation is reviewed in fundamental terms. The diverse subject matter is ordered into four main groupings whose characteristics are described in terms of numerous devices, both of present-day and historical significance. Existing as well as potential areas of scientific and commercial operation are discussed. The basic principles of recent major developments in high intensity magnetic Separation are closely examined.     

Nachruf Prof. Hübner

Abstract

Representative water samples were collected from different oases in the western desert of Egypt to examine characteristics of Egyptian groundwater. Chemical data recognized two basic groundwater types; alkali bicarbonate and alkali chloride, where sodium has the highest concentration. For each region the median SD, δ¹⁸ 0 and ionic strength of water calculated from their chemical analyses are recorded and plotted.

Generally, the results of isotopic content measurements of the groundwaters from the different oases in the western desert indicate the fossile origin of these waters. The values of δD and δ¹⁸ 0 of the western desert oases' waters are characteristic of old paleowaters from the Nubian sand aquifer. Modern sparse rainfall data suggest that any precipitation will exhibit moderate to large positive isotopic content enrichments and cannot be a source for these waters. They have been in no connection with the Nile water, moreover the change in isotopic composition is due to evaporation which is now ineffective at deeper levels.     

Commentary on “Mechanical properties of monodomain side-chain nematic elastomers” by P. Martinoty,P. Stein,H. Finkelmann,H. Pleiner and H.R. Brand

We discuss the background to static and dynamic soft elasticity. The evidence in the static case and the symmetry basis for soft and semi-soft elasticity is well understood. By contrast the dynamic analogy is less clear. Lack of clean time scale separation clouds the interpretation of director relaxation keeping up, or not, with imposed strains. However, the reduction in modulus between geometries obtaining at low frequencies and being lost at high frequencies confirms that director reaction indeed determines dynamical semi-softness.Received: 13 April 2004, Published online: 17 August 2004PACS: 83.80.Va Elastomeric polymers - 61.30.-v Liquid crystals - 83.60.Bc Linear viscoelasticity     

Comment on ‘Cr LVV Auger emission and photoreduction of hexavalent Cr oxides by A.G. Schrott,G.S. Frankel,A.J. Davenport,H.S. Isaacs,C.V. Jahnes and M.A. Russak’

A paper by Schrott et al. [Surf. Sci. 250 (1991) 139] on the Auger Cr LVV spectra of Al/Cr alloys is commented on.The area of major disagreement regards the hypothesis that Al-alloying suppresses the Cr LVV decay. It is pointed out that the surface chemical composition of the alloys should be considered in detail, and that instrumental factors and the presence of surface contamination would account for the negligible Cr LVV intensity.